Walter A. Illman

4.6k total citations
116 papers, 3.6k citations indexed

About

Walter A. Illman is a scholar working on Environmental Engineering, Geophysics and Mechanical Engineering. According to data from OpenAlex, Walter A. Illman has authored 116 papers receiving a total of 3.6k indexed citations (citations by other indexed papers that have themselves been cited), including 109 papers in Environmental Engineering, 67 papers in Geophysics and 56 papers in Mechanical Engineering. Recurrent topics in Walter A. Illman's work include Groundwater flow and contamination studies (107 papers), Hydraulic Fracturing and Reservoir Analysis (56 papers) and Geophysical and Geoelectrical Methods (52 papers). Walter A. Illman is often cited by papers focused on Groundwater flow and contamination studies (107 papers), Hydraulic Fracturing and Reservoir Analysis (56 papers) and Geophysical and Geoelectrical Methods (52 papers). Walter A. Illman collaborates with scholars based in Canada, United States and China. Walter A. Illman's co-authors include Steven J. Berg, Shlomo P. Neuman, Zhanfeng Zhao, Xiaoyi Liu, Andrew J. Craig, Tian‐Chyi Jim Yeh, Pedro J. J. Alvarez, Velimir V. Vesselinov, Junfeng Zhu and Hiromitsu Saegusa and has published in prestigious journals such as Environmental Science & Technology, The Science of The Total Environment and Water Resources Research.

In The Last Decade

Walter A. Illman

110 papers receiving 3.6k citations

Peers

Walter A. Illman
Tian‐Chyi Jim Yeh United States
Giorgio Cassiani Italy
Robert W. Ritzi United States
Bernard H. Kueper Canada
Allen M. Shapiro United States
Mònica Riva Italy
Aldo Fiori Italy
Stefan Finsterle United States
T.‐C. Jim Yeh United States
Eric Sonnenthal United States
Tian‐Chyi Jim Yeh United States
Walter A. Illman
Citations per year, relative to Walter A. Illman Walter A. Illman (= 1×) peers Tian‐Chyi Jim Yeh

Countries citing papers authored by Walter A. Illman

Since Specialization
Citations

This map shows the geographic impact of Walter A. Illman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Walter A. Illman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Walter A. Illman more than expected).

Fields of papers citing papers by Walter A. Illman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Walter A. Illman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Walter A. Illman. The network helps show where Walter A. Illman may publish in the future.

Co-authorship network of co-authors of Walter A. Illman

This figure shows the co-authorship network connecting the top 25 collaborators of Walter A. Illman. A scholar is included among the top collaborators of Walter A. Illman based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Walter A. Illman. Walter A. Illman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
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Steelman, Colby M., et al.. (2025). Comparison of NMR ‐Derived Hydraulic Conductivity with Various Hydraulic Testing Methods. Ground Water. 63(5). 713–724.
3.
Zhu, Jiong, Yuanyuan Zha, Tian‐Chyi Jim Yeh, Walter A. Illman, & Dong Xu. (2024). Inverse modeling of frequency domain-based one-dimensional soil water flow in layered soils. Journal of Hydrology. 636. 131296–131296. 1 indexed citations
4.
Hwang, Hyoun‐Tae, et al.. (2024). Assessment of hydraulic and thermal properties of the Antarctic active layer: Insights from laboratory column experiments and inverse modeling. The Science of The Total Environment. 937. 173474–173474.
5.
Li, Hao, et al.. (2023). An Analytical Method to Estimate Groundwater Depletion of an Aquitard Due To Variable Drawdowns in Adjacent Aquifers. Water Resources Research. 59(4). 4 indexed citations
6.
Illman, Walter A., et al.. (2023). Hydraulic Tomography Estimates Improved by Zonal Information From the Clustering of Geophysical Survey Data. Water Resources Research. 59(9). 6 indexed citations
7.
McCall, Wesley, et al.. (2023). Evaluation of Hydraulic Conductivity Estimates from Various Approaches with Groundwater Flow Models. Ground Water. 62(3). 384–404. 8 indexed citations
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Wang, Jinguo, et al.. (2023). Experimental and numerical studies of dynamic variation of liquid water and water vapor flow in the vadose zone. Journal of Hydrology. 623. 129775–129775.
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Zhao, Zhanfeng, et al.. (2019). Use of steady-state hydraulic tomography to inform the selection of a chaotic advection system. Journal of Contaminant Hydrology. 229. 103559–103559. 5 indexed citations
13.
Zha, Yuanyuan, Tian‐Chyi Jim Yeh, Walter A. Illman, et al.. (2014). Mapping Three-Dimensional Hydraulic Heterogeneities in Fractured Granite through Transient Hydraulic Tomography. AGU Fall Meeting Abstracts. 2014. 1 indexed citations
14.
Berg, Steven J. & Walter A. Illman. (2012). Field Study of Subsurface Heterogeneity with Steady‐State Hydraulic Tomography. Ground Water. 51(1). 29–40. 54 indexed citations
15.
McLaren, R. G., Edward A. Sudicky, Youngjin Park, & Walter A. Illman. (2012). Numerical simulation of DNAPL emissions and remediation in a fractured dolomitic aquifer. Journal of Contaminant Hydrology. 136-137. 56–71. 31 indexed citations
16.
Berg, Steven J., Paul A. Hsieh, & Walter A. Illman. (2011). Estimating Hydraulic Parameters When Poroelastic Effects Are Significant. Ground Water. 49(6). 815–829. 22 indexed citations
17.
Illman, Walter A., et al.. (2009). The Noordbergum Effect and its Impact on the Estimation of Hydraulic Parameters. AGU Spring Meeting Abstracts. 2009. 1 indexed citations
18.
Hao, Yonghong, Tian‐Chyi Jim Yeh, Walter A. Illman, et al.. (2007). Hydraulic Tomography for Detecting Fracture Zone Connectivity. Ground Water. 46(2). 183–192. 82 indexed citations
19.
Illman, Walter A., Andrew J. Craig, & Xiaoyi Liu. (2007). Practical Issues in Imaging Hydraulic Conductivity through Hydraulic Tomography. Ground Water. 46(1). 120–132. 85 indexed citations
20.
Vesselinov, Velimir V., Shlomo P. Neuman, & Walter A. Illman. (2000). Three-dimensional inverse modelling of pneumatic tests in unsaturated fractured rocks.. IAHS-AISH publication. 243–249. 2 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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